Second-hand-setting mechanism for watches



A. BURNSTINE.

SECOND HAND SETTING MECHANISM FOR WATCHES.

APPLICATION FILED MAY 25, 1922.

1,421,668. v Patented July 4, 1922. 1

Fig. 2

a Q I 3.. 32 3 70 Afiraham/fiurnst UNITED STATES PATENT OFFICE.

ABRAHAM'BURNSTINE, OF WASHINGTON, Dis'r'RIc'r or screams.

1,421'368. e Original application filedMareh aljiezz; Serial No.

1922. Serial setting mechanism for watches, and is a divisional applicati'onjof my original application filechMarclr 31; 1922, Serial Number M8324, alsofor second-hand setting mechanism forwatches; i i As'statedabove; my invention relates to second-hand" setting mechanism for watches, designed with the object and purpose of providing a meanswhereby the" second hand ma'y be causedto'bestarted, for instance;

' from the 60 mark on the second-hand dial atzthe instant the minute hand rests over the full minute mark on the watch dial so that the second-hand will correctly indicate at all times thenumber ofsecchids the minute has traveled intermediate any two minute marks on the watch dial. In other Words, this inventiontis designed for the purpose of producing-a construction whereby the secmid and minute hands may be caused/to operate in synchronism.

I pr'odhce this result by asimplewatchstem controlledmechanismwhich will arres't'the'movement of the second-hand when ithas completed its cycle over the dial and rests over the 60 mark thereon; the arresting movement of the second-hand also acting to stop'the action of the entire wvatch movement; after which time, should the minute hand he notproperly positioned with re spect to the second-hand, it may beset di iectly foverits full minutemark, and the secbnd-hand operating mechanism released whereupon the fullwzitch 'movementwill be permitted to -be brougl'it into action; at which time the-minute and second-hands will start if'rom'their respective full-minute posit-ions An 'attachment for this purpose is-pa-rticularly adapted for railroad watches where accuracy in time, both Withiespect to' the minute and second" is'an element of exceedingly great importanceyalthongh the field for its usefulness is not limited to "its use inthisv particular manner, being equally Specification of Letters Pateht.

I secoae smessmaemammal" sea wa e-ass.

Patented July 4, 1922.

543324; Divided and. tliisapplicat'ion filed ma es, Nb. 563,476.

as Well adapted for any watch carrying a secondhand.

WVlule I am aware that this broad idea has been attempted to be placed touse with a varying degree of successyl believe I am the first to design a construction for the purpose specified which is so simple in its arrangement an'd'so eflectivein its operation, and which resides'only in the addition ofa few mechanical elements to a watch of ordinary type. y

In the construction with which I a1nfamiliar, a decided rearrangement of parts and complex additional elements were nec- -essary to "arrive at the object'for which my invention has been designed.

' In the accompanying drawing which illustrates a vpreferred embodiment of inyinvention; 1 i 3 t Figure 1 is an illustration of the adaptation of my invention to a" clutch mech anism in ambdern watch.

; Figure 2' is a perspective view of the spring member used in my device.

Figure 3 is a slightly" modified'formp'f my invention adapted to a similar clutch mechanism for watches.

Referring to the drawings in which siihilar reference characters designate cori'e spending parts'throughout tlie'seveinl views; i

the following is a brief outlineof the-operation 0i my :1'nvent1on,and'will be clear to those familiar with the art of .horology.

In the form of watch'shown in Figurel, and which illustrates certain of the parts of the setting and"winding'mechanism; parties iila'rly of the Hamilton and Illinois watches, butwh'ich may alsobe 'a'dapted' 'to other forms of watches; the" 'win'dingpinion is indicated at 50 and the winding stem or arbor which adapted to rotate'to wind and set the' 'watch movement beingshownat 52,thi's ste'm as isusual being vertically movable by a push or' pull upon the crown, (not shown) "and which I is" secured upon the upper endof thestem ()n the winding stem or arbor is" mounted the clutch 54 adaptedtem'ove vertically and to also'rotate therewith; said i clutch being provided with'the annular: groove 56; Fulcrumed at 59 is the winding and setting lever 60,-the

lower end of which "lies "in the path of the stem"52; g V v l Secured to the "lever 6O fpreferably ack jacent is fulcrum, by means of a small bracket 62- is a depending stout leaf or bar spring 64 the lower or free end 65 of which is adapted to be moved or swung into the path of movement or" a projection 22 on the seconds wheel let. The upper end of the spring 64-. is bent inwardly at 66 to provide a finger or yoke which lies within the annular groove 56. Therefore, actuation of the stem 52, through lever 60 results not only in the actuation of the spring 6%, but also a shifting of the clutch 54.

In the construction shown in Figure 3, which is that of the lValtham watch, the ar rangement of the stem 52, pinion 50, and clutch are substantially the same as in Figure 1, but the bar spring 76 is rigidly secured to the lever arms 72 and 74. In this form, however, the lever 68 is formed in a single piece, and fulcrumed at 70. The lever is provided with two arms 72 and 7a, which respectively lie within the annular groove 56 of the clutch sleeve and underlie the lower end of the stem 52.

Secured to the arm 72, by soldering or by suitable means, is a stout bar spring 76, the lower end of which is movable, through actuation of the lever '68, into the path of movement of the projection 22 on the seconds wheel 14.

In each of the forms shown in Figures 1 and 3 an out-ward movement of the stem to set the watch, results in a movement of the bar spring such that its lower end is moved. into the path of. travel. of the projection on. the seconds wheel to cause the latter to stop at a predetermined moment.

In the drawings and description, I have referred particularly to certain well known makes of watches, but my invention is of such a nature that same may be readily applied to use on any standard make of watch. Thus my invention may be manufactured and sold as an attachment "for a watch as well as a composite part thereof.

From the foregoing description of the construction of my improved device, it will be seen that I have provided a simple, inexpensive, and eflicient means for carrying out the objects of the invention, anl while I have particularly described the elements best adapted to perform the functions set forth, it is obvious that various changes in form, proportion, and in the minor details of construction may be resorted to, without departing from the spirit or sacrificing any of the principles of the invention.

Having thus described a preferred embodiment of my invention, what I claim as new and desire to protect by Letters Patent 1s:

1. In a watch, in combination with the movement, the winding stem having thereon a shiftable clutch member provided with a recess, a seconds hand wheel, a stop device comprising a bar having a portion disposed within the recess in said clutch member, the lower portion of said bar being arranged in proximity to said seconds hand wheel and being adapted to be moved by said clutch member into and out of engagement with said seconds-hand wheel.

2. In a watch, in combination with the watch movement, the winding stem having thereon a grooved clutch member, the winding and setting lever and a seconds-hand wheel a bar spring carried by said lever and provided with a yoke engaging within the groove of said clutch member, said bar spring being adapted to be moved by the operation of said winding stem into engagement with said seconds-hand wheel to stop the movement thereof.

3. In a watch having the usual movement and a seconds-hand wheel, a winding stem, a clutch member on said stem provided with a recess, a lever pivotally mounted within said watch, a stop device comprising a spring bar having a portion disposed within the recess of said clutch member and having its lower end disposed in proximity to said seconds-hand wheel a guide on said lever through which said bar loosely passes, said bar being adapted to be moved through the actuation of said clutch member to cause its lower end to be brought into or out of engagement with said seconds-hand wheel to stop or release the latter.

4:. In a watch, in combination with the watch movement, and its case, the winding stem having thereon an annularly grooved clutch member, and a seconds-hand wheel, stop device comprising a bar spring, means tor supporting said bar spring, within the watch movement case, a' yoke on the upper end of said spring disposed within the groove oi said clutch member, the lower end of said spring being disposed in proximity to the said seconds ha-nd wheel and being adapted through the movements of said clutch member to be moved. into or out of engagement with said seconds-hand wheel.

5. In a watch, in combination with the watch movement, the winding stem having thereon a grooved clutch member, the winding and. setting lever and a secondshand wheel, a bracket on said lever, a bar spring passing through said bracket, a yoke on the upper end of said spring disposed within the groove of said clutch member, the lower end of said spring being disposed in proximity to said seconds-hand wheel and adapted to be moved through the operation of said clutch member into and out of engagement therewith.

6. In a watch, including a movement having a reciprocating clutch, a seconds hand wheel, and means actuated by said clutch tohari-est the movement of said seconds hand w ee 7. In a watch, including a movement having a reciprocating clutch, a seconds hand wheel, and'means engaged with and actuated by said clutch to arrest the movement of said seconds hand wheel. e

8. In a watch, including a movement hav ing a reciprocating clutch, a seconds hand wheel, and a stop member connected with and actuated by said clutch to arrest the movement of said seconds hand wheel.

9. In a watch, including a movement having a reciprocating clutch, a seconds hand wheel, means for actuating said clutch, and means actuated by said clutch for arresting the movement of said seconds hand Wheel.

10. In a watch, including a movement having a reciprocating clutch, a seconds hand wheel, a stop device comprising a bar engaged with and actuated by said clutch 11. Ina watch, including a movement having a reciprocating clutch, a seconds hand wheel, a bar spring having one end thereof engaged with said clutch, the oppositeend ofsaid spring being adapted for engagement with said seconds hand wheel to arrest the movement thereof upon move- .ment of said clutch in one position, and

means for actuating said clutch.

In testimony whereof I affix my signature.

ABRAHAM BURNSTINE. 

